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--×Ö¶ÎÌí¼Ó˵Ã÷
EXEC sp_addextendedproperty 'MS_Description', 'ÒªÌí¼ÓµÄ˵Ã÷', 'user', dbo, 'table', ±íÃû, 'column', ÁÐÃû
--ɾ³ý×Ö¶Î˵Ã÷
EXEC sp_dropextendedproperty 'MS_Description', 'user', dbo, 'table', ±íÃû, 'column', ×Ö¶ÎÃû
--²é¿´×Ö¶Î˵Ã÷
SELECT
    [Table Name] = i_s.TABLE_NAME,
    [Column Name] = i_s.COLUMN_NAME,
    [Description] = s.value
from
    INFORMATION_SCHEMA.COLUMNS i_s
LEFT OUTER JOIN
    sysproperties s
ON
    s.id = OBJECT_ID(i_s.TABLE_SCHEMA+'.'+i_s.TABLE_NAME)
    AND s.smallid = i_s.ORDINAL_POSITION
    AND s.name = 'MS_Description'
WHERE
    OBJECTPROPERTY(OBJECT_ID(i_s.TABLE_SCHEMA+'.'+i_s.TABLE_NAME), 'IsMsShipped')=0
     AND i_s.TABLE_NAME = 'jobs'
ORDER BY
    i_s.TABLE_NAME, i_s.ORDINAL_POSITION


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CREATE TABLE tb(id int, [value] varchar(10))
INSERT tb SELECT 1, 'aa'
UNION ALL SELECT 1, 'bb'
UNION ALL SELECT 2, 'aaa'
UNION ALL SELECT 2, 'bbb'
UNION ALL SELECT 2, 'ccc'
--SELECT * from tb
/**//*
id value
----------- ----------
1 aa
1 bb
2 aaa ......

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Create proc RegisterUser
(
@usrName varchar(30)
,@usrPasswd varchar(30)
,@age int
,@PhoneNum varchar(20)
,@Address varchar(50)
)
as
begin
--ÏÔʾ¶¨Òå²¢¿ªÊ¼Ò»¸öÊÂÎñ
begin tran
insert into user
(
userName
,userPasswd
)
values
(
@usrName
,@usrPassw ......

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set @d=getdate()
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select [Óï¾äÖ´Ðл¨·Ñʱ¼ä(ºÁÃë)]=datediff(ms,@d,getdate())
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